I put on a quick and easy one. If you have a loader then you can clip one on the bar that goes across the hood. I will post a pic when I find my camera. I took mine from my son's stroller. It's not the manlyest cup holder but it fits and I think everything is manly on a tractor. You can find the cup holders for strollers at Toys R Us and I bet you could find them at Walmart too.
Steve